Windows 10 just told me that Windows 11 22H2 is now ready for installation. Does that mean they have fixed the game performance issue?
Are you sure it said W11? W10 had a 22H2 update too.
At any rate, after updating W10 22H2 completely with the performance and reliability updates that came after updating from 21H1, I now get much better performance in A Plague Tale Requiem. There's been no performance patch for this game since I last played it, so I'm pretty sure it was these updates, plus maybe a bit due to a BIOS update I did on my MB, which also included performance and stability fixes.
The FPS still dips a bit at times, but usually only down to 45 FPS, vs sub 40 before, and this is with the settings now bumped up to Ultra. The main difference is it plays a lot smoother. There's a very subtle hitch every now and then, which I'm pretty sure has to do with assets loading in transition areas. It's an in house engine Asobo uses for this game, but this subtle hitch is not unlike what you see in a lot of UE 4 games, in fact it's more subtle than some of those cases.
Regarding W11 and that game performance glitch where debugging enables itself, I doubt it's been fixed yet, or there would have been widespread news about it, as well as evaluations on it probably.